I tried a universal remote product for the Palm today called OmniRemote. It's fully programmable, and costs $25 after 15 days. I got decent range with my Zire 21, about 12 feet but I didn't test further. It can be programmed to work with anything that is IR-controllable.
If you're looking for a programmable universal remote and have a PDA-I highly recommend this.
If you're looking for a programmable universal remote and have a PDA-I highly recommend this.